Home / 139,845.89-192,985.57-76,182.32

Finding the Fourth Proportional to 139,845.89, 192,985.57 and 76,182.32

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Solution

The fourth proportional to 139,845.89, 192,985.57 and 76,182.32 is: 105,130.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,845.89 : 192,985.57 = 76,182.32 : x
  2. Step 2: Convert to fraction form
    139,845.89/192,985.57 = 76,182.32/x
  3. Step 3: Cross multiply
    139,845.89x = 192,985.57 × 76,182.32
  4. Step 4: Simplify right side
    139,845.89x = 14,702,088,449.12
  5. Step 5: Solve for x
    x = 14,702,088,449.12/139,845.89
  6. Step 6: Final answer
    x = 105,130.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.